Date: Manu - If y=ln(1+√1-x) prove that 4x(1-x)y''+2(2-3)y'+1=0
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labourer is engaged for 20 days on the condition that he will receive 280 for each day he works and will be fined 60 for each day he is absent. If he receives ? 2540 in all, for how many days did he remain absent?
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